Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 277 · 40 questions

What you do (Float or sink?): 1. Fill a tub with water on a towel, with an adult nearby. 2. Guess “float” or “sink” for each object and write it in a table. 3. Gently place each object on the water and write what happens. 4. Press the sinking clay into a boat shape and try again; wipe up spills.

1. 1.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the kind of clay
2. 2.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
3. 3.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.🔍 Which is the odd one out? (a) a pebble (b) an ice cube (c) a ping-pong ball (d) a cork
5. 5.🛟 Does an iron nail float or sink in water? (a) sinks (b) floats
6. 6.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it dissolves (c) it sinks (d) it turns white
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the amount of clay (b) the tub of water (c) the kind of clay (d) the shape of the clay
9. 9.🛟 Does a steel spoon float or sink in water? (a) sinks (b) floats
10. 10.True or false: a feather floats on water. (a) False (b) True
11. 11.🛟 Which of these sinks in water? (a) a piece of thermocol (b) a ping-pong ball (c) an empty capped bottle (d) a pebble
12. 12.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) steel is very light (c) its hollow shape (d) sea water is warm
13. 13.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a tub of water (d) a battery cell
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is kept the same. (a) False (b) True
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) True (b) False
16. 16.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) both of them (c) neither of them (d) the small pebble
17. 17.🔍 Which is the odd one out? (a) a glass marble (b) an iron nail (c) a feather (d) a ball of clay
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we keep it the same (b) we change it (c) we measure it
19. 19.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it floats higher (c) it sinks (d) it melts
21. 21.🛟 Does a feather float or sink in water? (a) sinks (b) floats
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a towel for spills (d) a magnet
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) True (b) False
24. 24.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to win a prize (d) to keep children safe
25. 25.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) more plain water (c) a little shaking (d) lots of salt stirred in
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) leave water on the floor (c) play near a deep pond (d) run around the tub
28. 28.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
29. 29.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it turns to stone (c) it can float (d) it dissolves
30. 30.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
31. 31.True or false: an ice cube sinks in water. (a) True (b) False
32. 32.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a towel for spills (d) a balloon
33. 33.True or false: an ice-cream stick sinks in water. (a) True (b) False
34. 34.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the tub of water (b) the amount of clay (c) the shape of the clay (d) whether it floats
35. 35.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a towel for spills (c) a tub of water (d) a magnet
36. 36.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
37. 37.True or false: a mirror is not needed for the float-or-sink test. (a) True (b) False
38. 38.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a results table (c) small test objects (d) a balloon
39. 39.🛟 Which of these sinks in water? (a) a steel spoon (b) a ping-pong ball (c) a piece of thermocol (d) a cork
40. 40.🔍 Which is the odd one out? (a) a cork (b) an ice cube (c) a dry leaf (d) a glass marble

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